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VegBank Data Dictionary: Tables

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DB Table Name coverMethod
Table Cover Method
Notes This table associates a cover scale recognized by the plot data collectors with a set of coverclasses specified in the coverIndex table. This table, together with the coverIndex table, defines a coverclass method.
Field DB Field Name Req'd? Data Type Misc Flag List? Definition
ID COVERMETHOD_ID no serial PK no Database generated identifier assigned to each unique coverclass methodology.
Reference reference_ID no Integer FK no Foreign Key into the reference table, linking the defining reference to a cover method.
Cover Type coverType required varchar (30) n/a no Name of the coverclass method (e.g., Braun-Blanquet, Barkman, Domin, Daubenmire, Carolina Vegetation Survey, etc.).
Cover Estimation Method coverEstimationMethod no varchar (80) n/a closed The way that cover is estimated on the observation.
Accession Code accessionCode no varchar (100) n/a no Code that uniquely references this record, allowing reference to this record for this version of this database. Better than a primary key, which is automatically generated by a database and not globally unique. VegBank Accession codes are only generated by VegBank, and therefore data integrity can be guaranteed, unlike with a primary key (number).